package collection;

import java.util.*;

public class SortInteger {
    public static void main(String[] args) {
        List<Integer>list = new ArrayList<>();
        Random random = new Random();
        for (int i = 0 ; i < 10 ; i++){
            list.add(random.nextInt(100));
        }
        System.out.println(list);
        Collections.sort(list);
        System.out.println(list);
        Collections.reverse(list);
        System.out.println(list);
        Collections.sort(list,(o1 , o2) -> o2 - o1);
        System.out.println("第一个元素为:"+list.get(0));
    }
}
